Question

Estimate the following result:

$6398+17928$.

Answer 1

Step 1. Rounding off the numbers to the nearest hundred.

• As $6398$ lies between $6000$ and $7000$

Since $6398$ is nearest to $6000$ than to $7000$.

Therefore $6398$ rounded off to the nearest thousand as $6000$.

• Also $17928$ lies between $17000$ and $18000$

Since $17928$ is nearest to $18000$ than to $17000$.

Therefore $17928$ rounded off to the nearest thousand as $18000$.

Step 2.Simplify

$6000+18000=24000$

Hence estimate value of $6398+17928$ is $24000$